Improvement in machines for cutting flock



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Witnesses.

NITED STATES JOSEPH CHASE, OF LOVELL, MASSACHUSETTS.

IMPROVEMENT IN IVIACHINS FOR CUTTING FLOCK.

Specification foiining part of Lclteis Patent No. 36,6132, dated October 14, 1802.

.To all whom it may concern:

Be it known that I, JOSEPH CHASE, of Lowell, in the county of Middlesexand State of Massachusetts, have invented a new and Improved Flock-Cutting Machine; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification, in which Figure l is a side sectional view of my invention, taken in the line :c a, Fig. 2. Fig. 2 is a horizontal section of the same, taken in the lineg/ y, Fig. l.

Similar letters of reference indicate corresponding parts in the two figures.

This invention relates to an improvement in the ordinary flock-cutting machine which is in most general use, the same consisting of a rotating hollow cylinder provided with ribs on its inner periphery, and a rotating cylinder of spiral knives placed within the cylinder and arranged with a stationary knife, over the edge of which the edges of the spiral knives pass and perform the cutting operation.

The invention consists in using, in connection with the cylinder of spiral knives and the stationary knife, a plate so arranged in relation with the parts aforesaid as to insure a regular feed of the flock to the cutters and materially expedite the working of the machine.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A represents a hollowcylinder, which is tted loosely on stationary circular plates a a, attached to a suitable frame, B.v

C is a shaft, which has its bearings b b on the frame B and passes through the plates a a and cylinder A. This shaft C is allowed to turn freely in its bearings, and has upon it a cylinder, D, to the periphery of which there is secured a series of spiral knives, c. On one end of the shaft C there is a pulley, d, from which a shaft, E, on the frame B is rotated by a belt, F, and the cylinder A is rotated from the shaft E by means of a pinion gearing into teeth c on the periphery of the cylinder A. These parts are the same as those in the ordinary machines in use, are well known, and therefore do not require a particular description. The inner periphery of the cylinder A is provided with ribs f, which have a radial position and project a suitable distance to-` ward the center of the cylinder.

G is a bar, which is placed transversely on the frame A, andis secured thereto by screws f/ g, which pass through transverse oblong slots 7i in the bar and into the frame A. The bar G passes th rough oblon g slots iz' in the circu lar plates a a., and to the upper surface of said bar there is attached a knife, H, the cuttingedge of whichprojects beyond the bar, and is in a plane which bisects the axis of the knifecylinder I) horizontally, as shown clearly in Fig. 1.

On the frame A, and directly back of the bar G, near each end of it, there is a small upright, '7'. These uprights are permanently attached to the frame, and through each one a set-screw, 7i', passes horizontally and bears against the bar, as sh own clearlyin Fig. 2.-

To the upper surface of the bar G there is attached a plate, I, which has an inclined position outward from the knife-cylinder D, as

shown clearly in Fig. l. This plate I extends f the whole width of the cylinder A, as shown in Fig. 2, and it may be constructed of metal of a suitable thickness to prevent it from casually bending. i.

The material to be cut is placed within the cylinder A and the latter rotated by applying power to the shaft C of the knife-cylinder D, the motion being communicated to cylinder A from the shaft C by the means previously described. The knife H is adjusted by means of the screws gf/ and set-screws 7s 7c, so that the edges of the spiral knives c will pass closely over its edge as the cylinder D rotates, and the flock is cut by the action of the knives cand the stationary knife H, the `flock as the cylinder A i rotates being carried np by the ribs j' and falling by its own gravity on the cylinderD. The inclined plate I forms a kind of hopper and serves to direct the flock to the cutters, and

plate I, it will be seen, obviates this difficulty, and consequently greatly expedites the Work. n consequence of having the bar G of the knife H attached to the frame B and arranged with screws, as shown, the knife cannot be casually forced back under the cutting action of the knives c, and hence the knives will operate perfectly at all times.

The ordinary stationary knife is arranged on a center or joint at its lower edge, and is adjusted from that center, thc plate having a position slightly1 inclined from a vertical plane. This arrangement renders the stationary knife l very liable to be forced out under the cutting action of the knives c, a contingency which the set-screws 7s k effectual] y prevent.

This invention does not involve any additional costin the construction of the machine,

der D, to operate as and `for the purpose herein set forth.

, JOSEPH CHASE.

W'itnesses:

GEORGE F. RICHARDSON, lloir-IN Davis. 

